Electric motor



(No Model.)

B. BAKER.

BLEGTRIG- MOTOR.

No. 453,031. Patented May 26, 1891.

UNITED STATES ELBRIDGE BAKER, OF M ALDEN, MASSACHUSETTS.

ELECTRIC MOTOR.

SPECIFICATION forming part of Letter Application filed July 5, 1890.

T0 aZZ whom it may concern.-

Be it known that I, ELBRIDGE BAKER, of Maldemin the county of Middlesexand State of h/Iassachusettshave invented an Improvement in ElectricMotors, of which the following is a specification.

The objects of myinvention are to provide a cheap, simple, convenient,and efficient electric motor more especially adapted to run upon anelevated track for carrying small parcels or light packages; and itconsists in the peculiar construction, combination, and arrangement ofthe several parts of the device, hereinafter more fully described, andspecifically set forth in the claims.

In the drawings hereto annexed, and which form a part of thisspecification, it will be seen that Figure 1 represents a side elevationof an electric motor constructed to embody my invention. Fig. 2represents an end elevation of the same, and Fig. 3 a plan showing thearmature driving-wheel in position on an elevated or suspended track.

A represents an elevated or suspended track of wood, to the under sideof which is secured two conducting copper wires or strips B B, extendingparallel with each other throughout the length of the desired line to betraversed by the armature driving-wheel O, the body of which incloses asuitable armature, (not fully shown,) and its periphery is provided withprojecting flanges, so as to guide and retain the driving-wheel inposition on the upper surface of the track. This armature driving-wheelG is poised upon the said track by means of the curved or bentpole-pieces D, which are curved or bent to one side and downward, thenturned inward partially around the track, so that the center of gravityof the driving-wheel is brought to the vertical plane of the center ofthe field-magnet P, suspended between the lower ends of the said curvedor bent pole-pieces 'D by means of suitable bolts, as shown. It will beunderstood that by bending the said pole-pieces to one side and backagain space is afforded to allow the position of the rail between themotor-wheel and field-magnet, which are electrically connected, asshown. An insulating flat bar E is secured in posis Patent No. 453,031,dated May 26, 1891.

Serial No. 857,889. (No model.)

tion at each end to the said pole-pieces D, and has secured on the upperside thereof a spring contact-arm F, provided with a friction-roll H atits free end, which contacts loosely with the said conducting-wire B, asimilar spring contact-arm F, forming like contact with the other wire13', forming a circuit, as usual. The armature drivingwheel 0 isjournaled in the supporting-frame G, the ends of which are bent inwardlyand bolted to opposite sides of the said polepieces D, and the journalor axle of the driving-wheel C is provided at one end with a commutatorK, upon which the ends of the bushes L are arranged, as usual, theiroppo site ends being secured to insulated bindingposts N, supplied onthe said frame G, and connected electrically with the field-magnet P bysuitable wires, as heretofore. It will be seen and understood that thesaid spring contactarms F F are suitably connected with the field-magnetP, and the usual power wires B 15 form a suitable dynamo or battery, asheretofore employed for a similar purpose. The same need not be fullydescribed in minute detail, being well known and in general use foroperating various kinds of electric motors, stationary and traveling.

It will be evident that a suitable receptacle or boX may be attached tothe motor-frame or suspended therefrom, so as to receive small packagesor parcels to be transported from one point to another, however distant.The motor being reversed, or passing around a loop formed in the track,may return over the same.

Having thus described my invention, what I claim is 1. An electric motorhaving its armature inclosed within the driving-wheel and itsfield-magnet suspended beneath the same, substantially as described.

2. An electric motor having its armature located within thedriving-wheel and its field-magnet suspended from the motor-frame bymeans of curved pole-pieces, as set forth.

An electric motor having its armature within the driving-wheel, and afield-magnet suspended from the motor-frame by means of curvedpole-pieces, which carry the said magnet beneath the rail and poise thesaid di'ivducting material and provided upon its uning-wheelthereon,substantiallyas described. deiside with continuous metallicconduct- 4. An electric motor consisting of a single ors, substantiallyas shown and described.

wheel provided with an interior armature, ELBRIDGE BAKER. 5 and afield-magnet suspended from the mo- Witnesses:

tor-frame by curved pole-pieces, in 00 mbina- SYLVENUS WVALKER,

tion with a single rail composed of non-con- WILLIAM H. PARRY.

